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AZ91C Magnesium vs. 333.0 Aluminum

AZ91C magnesium belongs to the magnesium alloys classification, while 333.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AZ91C magnesium and the bottom bar is 333.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
73
Elongation at Break, % 2.3 to 7.9
1.0 to 2.0
Fatigue Strength, MPa 56 to 85
83 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
28
Shear Strength, MPa 96 to 160
190 to 230
Tensile Strength: Ultimate (UTS), MPa 170 to 270
230 to 280
Tensile Strength: Yield (Proof), MPa 83 to 130
130 to 210

Thermal Properties

Latent Heat of Fusion, J/g 350
520
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
590
Melting Onset (Solidus), °C 470
530
Specific Heat Capacity, J/kg-K 990
880
Thermal Conductivity, W/m-K 73
100 to 140
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.9 to 12
26 to 35
Electrical Conductivity: Equal Weight (Specific), % IACS 52 to 60
83 to 110

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 1.7
2.8
Embodied Carbon, kg CO2/kg material 22
7.6
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 990
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 16
2.1 to 4.6
Resilience: Unit (Modulus of Resilience), kJ/m3 75 to 180
120 to 290
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
49
Strength to Weight: Axial, points 27 to 43
22 to 27
Strength to Weight: Bending, points 39 to 53
29 to 34
Thermal Diffusivity, mm2/s 43
42 to 57
Thermal Shock Resistance, points 9.9 to 16
11 to 13

Alloy Composition


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Aluminum (Al), % 8.1 to 9.3
81.8 to 89
Copper (Cu), % 0 to 0.1
3.0 to 4.0
Iron (Fe), % 0
0 to 1.0
Magnesium (Mg), % 88.6 to 91.4
0.050 to 0.5
Manganese (Mn), % 0.13 to 0.35
0 to 0.5
Nickel (Ni), % 0 to 0.010
0 to 0.5
Silicon (Si), % 0 to 0.3
8.0 to 10
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0.4 to 1.0
0 to 1.0
Residuals, % 0 to 0.3
0 to 0.5

Comparable Variants